A person becomes a general partner:
1. As provided in the partnership agreement;
2. Under subdivision b of subsection 3 of section 45-10.2-66 following the dissociation of the last general partner of a limited partnership;
3. As the result of a conversion or merger under sections 45-10.2-94 through 45-10.2-106; or 4. With the consent of all the partners.